(PUP-1680) Set accept-encoding to identity when http_compression is false

Override the Ruby 2.x default of setting accept-encoding to gzip when puppet http_compression is set to false.
correct test description for http_compression disabled
Merge remote-tracking branch 'upstream/pr/3057' into stable

* upstream/pr/3057:
  correct test description for http_compression disabled
  (PUP-1680) Set accept-encoding to identity when http_compression is false

Closes GH-3057